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 Expert  724336

Expert in Radio Frequency / Analog / Mixed-Signal Integrated Circuit Design. Wireless Communications.

Available for your Consulting and Expert Witness Needs

California (CA)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
Expert has designed Radio Frequency/ Analog/Mixed-Signal integrated circuits for over 21 years. He has successfully lead projects and designed products from concepts to mass production in the wireless and hard disk drives industries. He has design integrated circuits in CMOS/BiCMOS/Bipolar processes using commercial and proprietary foundries. He has design circuits for different standards such as WLAN (IEEE 802.11/a/b/g); cellular handsets (GSM/WCDMA); Digital cordless telephones (ISM 900MHz/2.4GHz band); Silicon TV Tuner (DVB-H, DVB-T, NTSC, PAL, SECAM); GPS; Bluetooth; Hard disk drives. Furthermore he has experience in Design Automation, Applications Engineering, and System Verification in Military Aircraft System.

Expert has experience reviewing patents of Linear Power Amplifier for Wireless and Wireline Applications. He has reviewed the entire Power Amplifier profolio for Alcatel-Lucent. He has designed Bipolar and CMOS RF Low Noise Amplifer for receivers and RF Power Amplifiers for transmitters in WiFi and Cordless Phones. The WiFi CMOS Transceiver was awarded in Computek. He has designed and resolved design issues in 20dBm 55% efficiency power amplifier for 900MHz Digital Spread Spectrum Cordless telephones. This product was shipped in high volume and generated multimillion dollars of revenue. He designed the 2.4GHz frontend for the industry first 2.4GHz Digital Cordless telephone transceiver.

He has lead transceiver projects and designed various blocks. He has worked on chips that use Direct Conversion, Low-IF, & Dual conversion architectures. He has hands on design experience in RF frontends, baseband filters, Wide-band programmable gain amplifiers, baseband amplifiers, up converters, RF power amplifiers, RF power amplifier drivers & power control circuitry. He has spreadheaded development of on chip voltage control oscillators while at Conextant. Expert has 9 issued patents, 4 patents related to voltage control oscillator (VCOs), 3 patents related to DC offset correction in receiver baseband section, 2 patents related to RF TV tuners. He has production ICs in Samsung and Sagem GSM cellular phones; Sony & Uiden Digital Cordless telephones; WiFi certified WLAN IEEE a/b/g combo.

Expert has worked on different mixed-signal circuits for wireless and hard disk driver channel ICs. He has designed numerous baseband filters; one of them is a 100KHz channel selection gm-C filter which is in production Sagem GSM phones. He has also works on various programmable filters for read channel disk drives. One of the 3V gm-C filters was presented in ESSCirC on Sept 1994 and it was published in JSSC on July 1995. He has designed sub micron CMOS Analog Intellectual property Circuits (IPs) for digital baseband Circuits, circuits such as crystal oscillators (XOSC), linear regulators, & power management circuits.

He has spreadheaded on chip VCO development while working at Conextant. Integrated VCOs reduced the cost of built of materials (BOMS), it brings about significant cost reduction to the handset market. He has contributed putting together a Company wide VCO pattern portfolio. He has 4 issued patents related to VCO design. He worked on LC VCOs, colpitts VCOs & crystal oscillators.


integrated-circuit design


bipolar integrated circuit


custom integrated circuit


electronic circuit design


high-frequency integrated circuit


integrated circuit


integrated circuit selection


microelectronic circuit


radio frequency amplifier


radio frequency circuit


radio frequency integrated circuit


mixed-signal integrated circuit


voltage-controlled oscillator


disk drive design


linear integrated circuit

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Los Angeles, California;  San Diego, California;  Long Beach, California;  Santa Ana, California;  Anaheim, California;  Riverside, California;  Glendale, California;  Huntington Beach, California;  San Bernardino, California;  and Chula Vista, California.

Often requested
with this expert:

RF, RF Linearization, RF Amplifiers, RF Components
Radio Frequency Integrated Circuit Design, Radio Frequency...
RF and Microwave GaAs IC and circuit design, semiconductor...
Semiconductor Industry IC Package Design and Development,...

Year   Degree   Subject   Institution  
1990   M.S   Electrical Engineering; specialized in Circuit & Device   Michigan State University  
1988   B.S.   Electrical Engineering; specialized in Computer Engineering   Michigan State Univerisity  
  M.S.   System Architecting and Engineering   University of Southern California  

Work History:
Years   Employer   Title   Responsibilities

2006 to


(Undisclosed Consulting Company)


Owner / Principle Design Engineer


He provides consulting service to the integrated circuit design companies. He provides services such as design, develop, review, debug & test Radio Frequency/Analog/Mixed-Signal Integrated Circuits. Example: Design RF CMOS Global Positioning System (GPS) receiver. RF power amplifier patent review. Automated test solution for aircraft LRU. Build RF devices database based on Ontology for Semantic web

2008 to 2012




Principle Electrical Engineer


Test Hardware Procurement. Automated System Verification for Line Replacement Unit (LRU) and Aircraft wiring for Avionics upgrade. Assist Senior Manager in acquiring new business and daily group operations.

2005 to 2006


TrueSpan Inc


Senior RFIC Design Engineer


He designed & developed CMOS RFIC Tuner for DVB-H system.

2002 to 2005


Orion Microelectronics, Inc. (An Realtek Group Company)


RFIC Design Manager


He managed TV Tuner and Wireless LAN projects. He designed & developed CMOS RFIC for DVB-T/Analog TV, IEEE 802.11 a/b/g systems.

1999 to 2002


Conexant Systems, Inc.


Group Leader / Principle RFIC Design Engineer


He managed the GSM RFIC Design Group. He managed Cellular & Cordless Telephone RFIC projects. He designed & developed BiCMOS RFIC for GSM, WCDMA, Bluetooth & Digital Cordless Telephone.

1996 to 1999


Rockwell Semiconductor Systems, Inc


Senior Staff RFIC Design Engineer


He managed RFIC projects for Digital Cordless Telephone. He designed & developed BiCMOS/Biploar RFICs for Digital Cordless Telephone.

1991 to 1996


Silicon Systems, Inc. (A TDK Group Company)


Senior Mixed-Signal Design Engineer


He designed & developed BiCMOS/Bipolar Mixed-Signal IC for Read Channel Hard Disk Drive systems.

Career Accomplishments:


Publications and Patents Summary

He has 9 patents and 6 publications in Radio Frequency / Mixed Signal Integrated Circuit area.

Consulting Services:
Selected Consulting Examples:
  • Review the entire Wireless and Wire-line Linear Power Amplifier portfolio for Alcatel-Lucent for patent licensing and litigation
  • Design RF CMOS Global Position System (GPS)
  • Design and develop automated test solution for aircraft LRU
  • Develop RF device database based on Ontology for Semantic web
Recent Client Requests:
  • Rf devices expert for consulting on RF Device Definition and classifications.
  • Expert in Bluetooth technology for consulting on strain gauge.
  • Expert for consulting on development of new product.
  • Expert in Pierce oscillator design for consulting on analyzing circuit parameters.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Expert in linear power amps needed for stage 1 and 2nd set patent review.
  • Linear power amplifier expert for consulting on patent analysis.
  • Expert in RF receiver design.
  • Expert in reverse engineering for consulting on RF device.
  • Expert for consulting on cordless phone, IP telephony and related data conversion technology.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Language Skills:
Foreign Language   Description
Cantoness   Cantoness is his native language, in which he can speak, write & read fluently Read and Write Chinese.

Additional Skills and Services:

Industrial Guest Lecturer for USC Electrical Engineering Graduate level course (Wireless Filters) in Fall 2005 Industrial Guest Lecturer for Orange Coast College Electrical Technologies course (Integrated Circuit Layout) for few quarters between 2000 and 2002.


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